PHP 8.1.0 RC 2 available for testing

mb_strtoupper

(PHP 4 >= 4.3.0, PHP 5, PHP 7, PHP 8)

mb_strtoupperMake a string uppercase

Descrição

mb_strtoupper(string $string, ?string $encoding = null): string

Returns string with all alphabetic characters converted to uppercase.

Parâmetros

string

The string being uppercased.

encoding

O parâmetro encoding é a codificação de caractere. Se ele é omitido, o valor da codificação de caractere interna é usado.

Valor Retornado

string with all alphabetic characters converted to uppercase.

Exemplos

Exemplo #1 mb_strtoupper() example

<?php
$str 
"Mary Had A Little Lamb and She LOVED It So";
$str mb_strtoupper($str);
echo 
$str// Prints MARY HAD A LITTLE LAMB AND SHE LOVED IT SO
?>

Exemplo #2 mb_strtoupper() example with non-Latin UTF-8 text

<?php
$str 
"Τάχιστη αλώπηξ βαφής ψημένη γη, δρασκελίζει υπέρ νωθρού κυνός";
$str mb_strtoupper($str'UTF-8');
echo 
$str// Prints ΤΆΧΙΣΤΗ ΑΛΏΠΗΞ ΒΑΦΉΣ ΨΗΜΈΝΗ ΓΗ, ΔΡΑΣΚΕΛΊΖΕΙ ΥΠΈΡ ΝΩΘΡΟΎ ΚΥΝΌΣ
?>

Notas

By contrast to strtoupper(), 'alphabetic' is determined by the Unicode character properties. Thus the behaviour of this function is not affected by locale settings and it can convert any characters that have 'alphabetic' property, such as a-umlaut (ä).

For more information about the Unicode properties, please see » http://www.unicode.org/reports/tr21/.

Veja Também

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User Contributed Notes 1 note

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serg_x
1 year ago
Only first letter

function mb_ucfirst($string, $encoding = 'UTF-8'){
  $strlen = mb_strlen($string, $encoding);
  $firstChar = mb_substr($string, 0, 1, $encoding);
  $then = mb_substr($string, 1, $strlen - 1, $encoding);
  return mb_strtoupper($firstChar, $encoding) . $then;
}
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